CN103329419A - Dual-stage power conversion - Google Patents

Dual-stage power conversion Download PDF

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Publication number
CN103329419A
CN103329419A CN2011800651717A CN201180065171A CN103329419A CN 103329419 A CN103329419 A CN 103329419A CN 2011800651717 A CN2011800651717 A CN 2011800651717A CN 201180065171 A CN201180065171 A CN 201180065171A CN 103329419 A CN103329419 A CN 103329419A
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CN
China
Prior art keywords
voltage
frequency
electric pressure
pressure converter
circuit according
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Pending
Application number
CN2011800651717A
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Chinese (zh)
Inventor
弗朗切斯科·卡罗勃兰特
亚历山大·普罗迪克
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Qualcomm Inc
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Qualcomm Inc
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Priority to CN201510302998.5A priority Critical patent/CN105186871B/en
Publication of CN103329419A publication Critical patent/CN103329419A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1588—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load comprising at least one synchronous rectifier element
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/125—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M3/135—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/125—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M3/135—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M3/137—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

A circuit converts an input voltage to an output voltage. The circuit includes a first stage voltage converter that receives the input voltage and converts the input voltage. The first stage voltage converter includes a first buck converter having a double rail output: a first rail at a high intermediate voltage and a second rail at a low intermediate voltage. The circuit also includes a second stage voltage converter that receives the output rails and produces the output voltage.

Description

The twin-stage power transfer
Technical field
The present invention relates generally to power transfer and, more particularly, relate to the power transfer of being undertaken by the twin-stage transducer.
Background technology
Various power converters are known in this technology and are used for current in many application in market.The general example of one type power converter is the conventional buck-converter 100 of Fig. 1.Buck-converter 100 can be in order to reduce from the voltage of storage battery and dc voltage to be fed to direct current (the DC)-DC transducer of electronic building brick for (for example).
Buck-converter 100 comprises the transistor 102,104 by control circuit 106 controls.Buck-converter also comprises diode 108, capacitor 112 and inductor 110.Load 120 receives the output voltage of buck-converter 100.Control circuit 106 changes duty cycle, and under described duty cycle, transistor 102,104 is connected alternately inductor 110 be connected with supply voltage (Vin) and disconnect.In inductor 110 stored energys and when releasing energy, inductor 110 generates the output voltage (Vout) that is slightly smaller than supply voltage.
Another examples show of conventional power converter is in Fig. 2.Power converter 200 comprises makes two independent capacitors 211,221 the complete switch 210,220 in path.Power converter 200 generates two output voltages (Vout1 and Vout2) and supplies to two different loads 212,222.In some implementations, output voltage is different.
This such power converters can be used in the consumption-orientation device (for example, cellular phone and laptop computer) of broad variety.The example purposes of DC-DC power converter will be for reducing to the voltage for the treatment of apparatus from the voltage of storage battery.Need the fast transient response in order to catch up with the real-time power consumption of high-performance processor core.In addition, the fast transient response can help to provide efficiently fast and stable when using quick dynamic electric voltage to adjust in proportion.Therefore, need with the DC-DC transducer of digital core pairing in use high frequency.It also needs to limit the size of passive block so that can be placed close in load.
Yet when using the direct conversion of carrying out from battery tension, the transistorized necessary voltage rating of metal-oxide semiconductor (MOS) (MOS) can be forced use extremely lossy transistor under high-frequency.On the other hand, the operation under low frequency relates to huge inductor and the capacitor (especially when using a plurality of voltage domain) that use occupies a large amount of board spaces.
Summary of the invention
According to an embodiment, disclose a kind of circuit that input voltage is converted to output voltage.Described circuit comprises the first order electric pressure converter that receives described input voltage and change described input voltage.Described first order electric pressure converter has the output of double track bar: at first rail bar under the voltage between senior middle school and second rail bar under low intermediate voltage.Described circuit also comprises the second level electric pressure converter that receives described double track bar output and generate described output voltage.
According to another embodiment, disclose a kind of for the method that input voltage is converted to output voltage.Described method is included in first order electric pressure converter place and receives described input voltage.Described first order electric pressure converter comprises the output of double track bar.Described method is also contained between the first rail bar place supply senior middle school voltage and at the low intermediate voltage of second rail bar place supply, receive voltage and described low intermediate voltage between described senior middle school at second level electric pressure converter place, and generate described output voltage at electric pressure converter place, the described second level from voltage between described senior middle school and described low intermediate voltage.
According to another embodiment, disclose a kind of circuit that input voltage is converted to output voltage.Described circuit has for the device that produces first intermediate voltage and second intermediate voltage from described input voltage, and described generation device comprises first buck-converter.Described generation device comprises the output of double track bar.Described circuit also has for the device that generates described output voltage from described first intermediate voltage and described second intermediate voltage.
Preamble has been summarized feature of the present invention and technical advantage quite widely in order to can understand following [execution mode] preferably.Additional features and the advantage of the subject matter that forms claims of the present invention hereinafter will be described.It will be understood by one of ordinary skill in the art that the concept that discloses can be easily with acting on the basis of revising or being designed for other structure of carrying out identical purpose of the present invention with specific embodiment.The those skilled in the art it should be understood that also these equivalent constructions do not break away from the technology of the present invention as setting forth in the claims of enclosing.When considered in conjunction with the accompanying drawings, will understand preferably from following description and believe and be the peculiar novel feature of the present invention (about its tissue and method of operation) and other target and advantage.Yet, should clearly understand, each among the described figure is only in order to illustrate and to describe purpose and provided, and is not intended to be the definition of limitation of the present invention.
Description of drawings
For reaching of the present invention than complete understanding, refer now to the following description of carrying out by reference to the accompanying drawings.
Fig. 1 is the general example of one type conventional power converter.
Fig. 2 is another example of conventional power converter.
Fig. 3 shows the example wireless communication system that can advantageously use embodiments of the invention.
Fig. 4 is the explanation of the exemplary power converter of adjusting according to an embodiment.
Fig. 5 is the explanation according to the demonstrative circuit that is packaged with the DC-DC transducer of embodiment.
Fig. 6 is the explanation according to the exemplary chip encapsulation of embodiment.
Fig. 7 is the explanation of the exemplary method adjusted according to an embodiment.
Embodiment
Various embodiment provide a kind of twin-stage power converter circuit, and it has provides the storage battery interface and to above and below the high efficiency of two intermediate voltages of target voltage, the first order of coarse adjustment.The second level provide high-performance regulate and, in some instances, can with the integrated or encapsulation altogether of load (for example, processor or chip encapsulation).
Fig. 3 shows the example wireless communication system 300 that can advantageously use embodiments of the invention.For illustrative purposes, Fig. 3 shows three far-end units 320,330 and 340, and two base stations 350 and 360.It should be understood that more how far wireless communication system can have end unit and base station.Far-end unit 320,330 and 340 comprises improved semiconductor die package 325A, 325B and 325C respectively, and described improved semiconductor die package is implemented hereinafter the further embodiment of argumentation.Fig. 3 shows from the base station 350 and 360 to far-end unit 320,330 and 340 forward link signal 380, and from far-end unit 320,330 and 340 to the base station 350 and 360 reverse link signal 390.
In Fig. 3, far-end unit 320 is shown as mobile phone, far-end unit 330 is shown as portable computer, and far-end unit 340 is shown as computer in the radio area loop system.For instance, far-end unit can be the media player of mobile phone, handheld PCS Personal Communications System (PCS) unit, the portable data units of for example personal digital assistant, the device with GPS function, guider, set-top box, for example music player, video player, and the fixed position data cell of amusement unit, for example instrument fetch equipment, or any other device of storage or acquisition data or computer instruction, or its any combination.Although Fig. 3 explanation the invention is not restricted to these exemplary illustrated unit according to the far-end unit of teaching of the present invention.The present invention can be used for comprising any device of DC-DC power converter suitably, and no matter whether be used in the wireless communication system.
Fig. 4 is the explanation of the exemplary power converter 400 of adjusting according to an embodiment.Power converter 400 comprises two levels 410,420.The first order 410 receives input dc voltage (Vbatt) and exports two intermediate voltage Vint1, Vint2 from voltage source 401.The first order 410 can comprise have control circuit 411, the buck-converter of transistor 412,413, inductor 415 and capacitor 414.Control circuit 411 control duty cycle, under described duty cycle, transistor 412,413 connects to generate intermediate voltage Vint1, Vint2.In this example, control circuit 411 is operated under 1MHz, but the scope of embodiment is not limited thereto, and this is because control circuit 411 can be operated under any actual frequency.Control circuit 411 is for contrasting reference measurement Vint1 Vint1 is remained on the part of the feedback loop in the scope of being wanted.ON-OFF control circuit 416 is the part that comprises the feedback loop of control circuit 411, and it compares Vint1 and Vint2.Based on described comparison, ON-OFF control circuit 416 control transistors 417,418 duty cycle are so that the voltage difference between control Vint1 and the Vint2.
In this example embodiment, intermediate voltage Vint1, Vint2 be different from ground connection and, the floating voltage that truth generates for the operation by the buck-converter in the first order 410.420 the viewpoint from the second level, intermediate voltage Vint1, Vint2 are to be benchmark each other but not to be benchmark with ground connection.In addition, in this example, intermediate voltage Vint1, Vint2 can have poor less than output voltage V out.In other words, Vint1 deducts the absolute value of Vint2 less than the absolute value of Vout.
The second level 420 receives intermediate voltage Vint1, Vint2 and uses another buck-converter structure to generate output voltage V out.The second level 420 comprises transistor 421,422, inductor 423, capacitor 424 and control circuit 425.Inductor 423 alternately receives among intermediate voltage Vint1, the Vint2 each according to transistor 421,422 operation.Control circuit 425 is controlled duty cycle based on the comparison of output voltage V out and benchmark, and under described duty cycle, transistor 421,422 is connected and wanted in the scope so that output voltage V out is remained on.
In this example, control circuit 425 can be included in the buck-converter of operating under the 100MHz, but the scope of embodiment is not limited thereto.In various embodiments, control circuit 425 is operated under the frequency far above the frequency of operation of the control circuit 411 of (being more than 100 times or 100 times for example) first order 410.Therefore, the power converter circuit of Fig. 4 comprises and converts high input voltage to the first low frequency level 410 of two low intermediate voltages and the high frequency second level that intermediate voltage is converted to output voltage.
It should be noted that the voltage that voltage that inductor 423 exposes to exposes to less than inductor 415.Be applied to the voltage of inductor 415 across the scope from Vbatt to ground connection, and the voltage that is applied to inductor 423 is limited to poor between Vint1 and the Vint2.In some instances, the voltage on the inductor 415 can be the twice of the voltage on the inductor 423 or more than the twice.Again, the voltage on the transistor 412,413 can be the twice of the voltage on the transistor 417,418,421,422 or more than the twice.
For buck-converter, the voltage that the big I of inductor exposes to inductor reduces and reduces with the frequency of operation increase.On the one hand, in general, low voltage allows to use the small electric sensor.On the other hand, be applied to transistor 421,422 and the low voltage of inductor 432 allow to use the low voltage semiconductor device, therefore allow to carry out higher frequencies of operation (wherein in general, upper frequency allows to use the small electric sensor).These passes tie up in the power converter 400 and are suitable for.For instance, in an example, power converter 400 receives the supply voltage Vbatt of 3.6V and described voltage transitions is become the 1.8V at output voltage V out place.In this example, inductor 415 can be about 4.7 μ H, and inductor 423 can be about 10nH or below the 10nH.In addition, under upper frequency, use the small electric sensor also can allow to use the small electric container.For instance, in some instances, capacitor 414 and 419 can be about 5 μ F, and capacitor 424 can be about 30nF (but the scope of embodiment is not limited thereto).
As explained above, operate the intermediate voltage through rough adjustment under higher relatively frequency the second level 420, and wherein the difference between the intermediate voltage can be less than output voltage.Therefore, the second level can comprise relative less inductor, transistor and the capacitor that can be suitable in some instances being integrated in the semiconductor chip or encapsulate altogether with semiconductor chip.The exemplary configuration of showing the power converter 400 in the chip package application in Fig. 8 at Fig. 4.
Fig. 5 is the explanation according to the demonstrative circuit that is packaged with the DC-DC transducer 500 of embodiment.Circuit 500 comprises the chip that uses soldered ball (soldered ball 521 is an one example) to be installed on the circuit board 520 and encapsulates 510.Chip encapsulation 510 comprises the multi-core processor 511 with substrate 517 electric connections.Substrate 517 uses through hole (through hole 516 is an one example) to be communicated with circuit board 520 and multi-core processor 511.
Capacitor 512,514, inductor 515 (in this example, it is through being shown as conductor trace) and 100MHzDC-DC controller 513 are in substrate 517.Capacitor 512,514 is the part of the 2nd DC-DC switching stage.Though be not showed in herein, should be understood that a DC-DC switching stage can be included in the more large capacitor that chip encapsulates 510 outsides.1MHz DC-DC controller 502 and inductor 504 also are the part of a DC-DC switching stage.
In this embodiment, inductor 504 is for being installed to the discrete component of circuit board 540.Compare, capacitor 512,514 is the integrated form device.Chip encapsulation 510 uses 20 μ m to the copper tracing wire of 30 μ m, and processor 511 uses the single oxide processing procedure of 65nm1.2V.Available permalloy and copper layer are manufactured in inductor 515 on the semi-conducting material (for example, silicon), but or can will be imposed in the interconnection layer.
In this example, the whole second level that makes intermediate voltage progressively be reduced to the voltage of processor 511 is placed in the substrate 517.In other embodiments, partial all or part of (for example, the DC-DC controller 513) can be implemented in the processor 511.Because in the high-frequency of the being seen low voltage in partial input and controller 513, so that this is integrated into is possible.
Circuit 500 is illustrative, and the scope of embodiment is not limited to circuit 500.For instance, various embodiment can use the technology outside dividing circuit plate and the soldered ball, and still can adjust according to concept disclosed herein.In addition, different inductance, electric capacity and frequency values can be used for any one among herein the embodiment.
Fig. 6 is the explanation according to the exemplary chip encapsulation 600 of embodiment.Chip encapsulation 600 can encapsulate the identical mode of 510 modes that are communicated with the first order of DC-DC conversion with chip and come to be communicated with the first order of DC-DC conversion.For instance, chip can be encapsulated 600 and be installed to circuit board together with other DC-DC transition components.
Provide chip encapsulation 600 to show the various embodiment that can implement to have a plurality of outputs.For instance, chip encapsulation 600 comprises four groups of second level DC-DC change-over circuits 610,620,630,640.Each group circuit 610,620,630,640 comprise can with Fig. 4 in transistor T 1 to four suitable transistors of transistor T 4.
Fig. 7 is the explanation of the exemplary method 700 adjusted according to an embodiment.For instance, can come manner of execution 700 by the twin-stage power converter (the twin-stage power converter of for example, showing among Fig. 4) that receives input voltage and generation output voltage.
In frame 701, receive input voltage at first order electric pressure converter place.First order electric pressure converter comprises first buck-converter with the output of double track bar.In one embodiment, first order transducer is the low-frequency voltage transducer.
In frame 702, voltage between first rail bar place supply senior middle school, and at the low intermediate voltage of second rail bar place supply.In certain embodiments, between senior middle school the difference between voltage and the low intermediate voltage less than output voltage.
In frame 703, receive voltage and low intermediate voltage between senior middle school at second level electric pressure converter place.In an example, second level electric pressure converter is the high frequency voltage transducer.
In frame 704, generate output voltage at second level electric pressure converter place from voltage between senior middle school and low intermediate voltage.In certain embodiments, second level electric pressure converter supplies power to high-performance supported (for example, semiconductor chip or chip encapsulation).In these embodiments, may at least part of of second level electric pressure converter might be implemented in the load.
The scope of embodiment is not limited to the example of Fig. 7.Various embodiment can add, omit, rearrange or amending method 700 in action.For instance, some embodiment can comprise a plurality of second level electric pressure converter, and each in the described second level provides output voltage.On the other hand, some embodiment operate when the power consumption of input voltage fluctuation and load changes continuously.
In addition, provide the previous description of the embodiment that discloses so that any those skilled in the art can make or use the present invention.To those of ordinary skill in the art, will be easy to obviously the various modifications of these embodiments, and under the situation that does not break away from the spirit or scope of the present invention, Ding Yi General Principle can be applicable to other embodiment herein.Therefore, the present invention also is not intended to be limited to the feature of showing herein, and should meet the widest scope consistent with principle disclosed herein and novel feature.
Although described the present invention and advantage thereof in detail, should be understood that under situation about not breaking away from as the technology of the present invention that defines by appended claims, can make various changes, replacement and change in this article.In addition, the scope of the application's case is not intended to be limited to the specific embodiment of process, machine, manufacture, material composition, means, method and step described in this specification.As the those skilled in the art will be easy to understand from the present invention, can utilize according to the present invention carry out with corresponding embodiment described herein in fact identical functions or the realization result identical in fact with described corresponding embodiment current have now or process leaved for development, machine, manufacture, material composition, means, method or step after a while.Therefore, appended claims is intended to comprise these processes, machine, manufacture, material composition, means, method or step in its scope.

Claims (20)

1. one kind converts input voltage the circuit of output voltage to, and described circuit comprises:
First order electric pressure converter, it receives described input voltage and changes described input voltage, and described first order electric pressure converter comprises the output of double track bar: at first rail bar under the voltage between senior middle school and second rail bar under low intermediate voltage; And
Second level electric pressure converter, it receives described double track bar output and generates described output voltage.
2. circuit according to claim 1, wherein said first order electric pressure converter comprises that first buck-converter and described second level electric pressure converter comprise second buck-converter.
3. circuit according to claim 1, the difference between wherein said senior middle school between voltage and the described low intermediate voltage is less than described output voltage.
4. circuit according to claim 1, wherein said partial voltage input is not benchmark with ground connection.
5. circuit according to claim 1, wherein said second level electric pressure converter with utilize the load of described output voltage to be integrated in the semiconductor die.
6. circuit according to claim 1, wherein said first order electric pressure converter is operated under first frequency and wherein said second level electric pressure converter is being higher than under the second frequency of described first frequency and operates.
7. circuit according to claim 6, wherein said first frequency is less than one of percentage of described second frequency.
8. circuit according to claim 1, it is incorporated in the device, described device is selected from the group who is made up of following each person: music player, video player, amusement unit, guider, communicator, personal digital assistant PDA, fixed position data cell, and computer.
9. circuit according to claim 1, wherein said circuit is integrated in the semiconductor die.
10. method that is used for input voltage is converted to output voltage, described method comprises:
The place receives described input voltage at first order electric pressure converter, and described first order electric pressure converter comprises the output of double track bar;
Voltage and at the low intermediate voltage of second rail bar place supply between first rail bar place supply senior middle school;
Receive voltage and described low intermediate voltage between described senior middle school at second level electric pressure converter place; And
Generate described output voltage at electric pressure converter place, the described second level from voltage between described senior middle school and described low intermediate voltage.
11. method according to claim 10, the difference between wherein said senior middle school between voltage and the described low intermediate voltage is less than described output voltage.
12. method according to claim 10, wherein said first order electric pressure converter are operated under first frequency and wherein said second level electric pressure converter is being higher than under the second frequency of described first frequency and operates.
13. method according to claim 12, wherein said first frequency is less than one of percentage of described second frequency.
14. method according to claim 10, wherein said method is carried out when described input voltage fluctuation continuously.
15. one kind converts input voltage the circuit of output voltage to, described circuit comprises:
Be used for producing from described input voltage the device of first intermediate voltage and second intermediate voltage; And
Be used for generating from voltage between senior middle school and low intermediate voltage the device of described output voltage.
16. circuit according to claim 15, the difference between wherein said first intermediate voltage and described second intermediate voltage is less than described output voltage.
17. circuit according to claim 15, wherein said generation device are operated under first frequency and wherein said generating apparatus is being higher than under the second frequency of described first frequency and operates.
18. circuit according to claim 17, wherein said first frequency is less than one of percentage of described second frequency.
19. circuit according to claim 15, it is incorporated in the device, described device is selected from the group who is made up of following each person: music player, video player, amusement unit, guider, communicator, personal digital assistant PDA, fixed position data cell, and computer.
20. circuit according to claim 15, wherein said circuit is integrated in the semiconductor die.
CN2011800651717A 2010-12-17 2011-12-18 Dual-stage power conversion Pending CN103329419A (en)

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